cos

Computes the cosine in radians for each element of x.

📝 Syntax

• res = cos(x)

📥 Input argument

• x - a numeric value

📤 Output argument

• res - a numeric value

📄 Description

cos computes the cosine in radians for each element of x.

The cosine function is defined as: $\cos(x) = \frac{e^{ix} + e^{-ix}}{2}$

For real arguments, it represents the x-coordinate on the unit circle.

💡 Example

A = eye(3, 3);
res = cos(A)

🔗 See also

acos.

🕔 History

Version	📄 Description
1.0.0	initial version